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(No Model.)

G. W. CARLL.

GHIMNEY TOP. No. 338,249. Patented Mar. 23, 1,886.

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Wdh/e wel? ZvenJr UNITED STATES PATENT OFFICE.

CHARLES V. CARLL, OF CAMDEN, NEW JERSEY.

CHlMNEY-TOP.

-PECIEICATION forming part of Letters Patent No. 338.249, dated March 23, 1886.

Application tiled February 27, 1885.

To all whom it may concern.-

Be itknown that I, CHARLEs W. CARLL, a citizen of the United States, residing at Camden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Chimney-Tops; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specication, in which Figure l is a central vertical section of a chimney-top embodying my improvements. Fig. 2 is a horizontal section of the same on the lines :c x of Fig. l.

This invention has for its object to provide a chimney-cap which will more effcctually deilect currents of air blowing toward thetop of the cap from various directions, and which, while preventing said currents from blowing down the chimney or smoke-stack, will utilize them so as to increase the draft by causing them to pass the mouth of the chimney vertically, and thereby promote a strong suction.

My improvements consist in the peculiar construction and combination of parts, hereinafter set forth, having reference particularly to the following points: first, the combination with a central smoke-pipe, an external airjacket and a hood, of an annular defiector V- shaped in cross-section, located above the mouth of the smoke-stack, and so constructed that the wind, whether striking above or below said defiector, will be caused to pass upward beyond the smoke-stack, second, to the combination, with the smoke-stack and a casing, cylinder,or tube applied thereto and supporting a defiector V-shaped in cross-section, of a surmounting conical head so constructed as to deiiect the air-currents down upon the outer flange of the deflector, and cause the same to pass upwardly from said flange and produce an upward suction within the casing, cylinder, or tube; third, to the combination, with the smoke-stack and the deflecting appliances,of guards to direct the deflected currents in vertical directions and limit their horizontal circulation; fourth, to certain details of construction, as hereinafter fully set forth and specifically claimed.

In an application led by me on the 25th day of October, 1884, Serial No. 146,455, I

Serial No. 157,218. (No model.)

have shown and described a special construction of chimney-cap, the essential features of which may be adopted in carrying my present invention into effect; but I do not limit myself to any special form of cap or cowl, but will describe such as I think best adapted for the purposes of my improvement.

The-cap shown in Fig. 1 embodies the principal features described in my application before referred to,and comprises the pipes D E, surrounding the smoke-stack C and forming the two air-inlets d2 e2, the space d3 between the two pipes D E being in communication with the inlet d2 above the pipe D, while the inlet e2 is in communication with the interior of the pipe E. The pipe D has an upturned internal flange, c', which rises a short distance in the space between t-he smoke-stack C and the pipe E, leaving between the pipe E and flange e annular space f, for the passage of the currents deflected downward through inlet dZ and space d3.

In my previous application I described and showed the pipe E, which supports the conical top F, as a cylinder funnelshaped at its upper end.

As the principal feature of my present improvement, I add to the funnel mouth or iiange G an internal flange, F', of conical inclination, its incline or pitch being the reverse ofthe funnel, thus producing between the two flanges a channel, g, V-shaped in cross-section; and I find that this construction greatly increases the efficiency of the device, as any currents which otherwise ,might enter the funnel and blow downward and into the smoke-stack are now caused to strike the inner ange, F', and to circulate around the V-shaped channel and rise above the mouth of the casing E. As the flange F rises somewhat above the upper' edge of the funnel, the wind, whether blowing horizontally or downward, will impinge against said flange and be deliected upwardly, the outer flange aiding the directive tendency.

L designates a conical hood supported by rods Z Z above the mouth of the chimney-top and a sufficient distance above the V-shaped deiiector G F', to afford a free passage in a horizontal direction for the air-currents. This hood I prefer to make of such a diameter at its base and of such a taper that the horizontal or other air-currents impinging against its sides will be deflected downward and against the inner surface of the flange G, from which they will be deflected inwardly and across the mouth of the stack.

Guards or partitions are shown at m m attached to the outer surface of the pipe E and radially arranged, so as to divide the annular space between the pipes E andD into vertical channels, whereby the air-currents entering said space will be caused to travel in vertical lines, and thus impinge against such deflecting flanges or parts as will insure their passage across the Vmouth of the stack. These partitions or guards are wider at their upper portionsthan attheir lower, and are shouldered at m m', so Yas to rest upon the flaring {bp of the pipe or casing D, which thus constitutes the support for the pipe E, the partitions serving not only as deiiecting mediums, but as means for maintaining the casings D and E at suitable distances apart. The widening of the partitions above the pipe D further increases the efficiency of the former as means for promoting the proper directive tendency ofthe air-currents striking the outer surface of the casing or pipe E above the mouth of the pipe D.

It will be observed that the flarin g top of the tube D is formed of two flanges, 0 o, converging outwardly, thus producing a double conical head or deilector, the surfaces of which have a tendency to deflect vertical and other currents, so that they will enter the spaces between the partitions, and thus become effective in promoting draft. Guards a n, corresponding in lines to the guards m, are arranged below the casing D, the latter being supported on the same.Y

In my previous application I described an inverted cone, G, for the purpose of preventing the access of cross-currents of wind. I now suggest a modification of the same, consisting in two cones, M IWI', arranged base to base, the upper cone serving as a water guard or shed, and adapted for special use on steamships. The water, entering and falling on the cone lVI, flows down into the dish or cavity formed by the flanged base of the tube D, which base should be perforated to allow the water to escape. Should the escape be too slow, the rising water will escape over the edge of the flange.

I have described the deflector composed of the flanges F G as being V-shaped in crosssection; but I do not confine myself to this precise form, as the flanges may be curved and still perform their functions.

I do not claim, broadly, the combination, with a chimney or smoke-stack having a surmounting hood, of a V-shaped deflector, the same being shown in the patent to Hull, No. 197,033, wherein the V-shaped deflector is applied to a rectangular chimney, while the surmounting hood depends below the upper edge of the inner wall of the V-sbaped defiector.

That I claim as my invention is as follows:

l. In chimney caps or cowls, the combination, with a smoke-pipe, of a surmounting de fiector consisting of two conical flanges, F G, arranged at opposite inclinations and including a V-shaped space closed at the bottom and adapted and designed to deflect currents ofV air, and a surmounting conical hood of a di! ameter equal to or less than the flange G of said deector, said hood'beng arranged with its base above the top of the flange F, substantially as described.

2. In a chimney top or cowl, the combination, with the body E, provided with the radial partitions or guards m m, and having a V-shaped delector, G ISV, arranged at its upper end, of the external casing, D, provided with a double conical deflecting-flange, o 0, the partitionsm being widened and shouldered at their upper portions, so as to rest upon said flange, substantially as described.

3. In a chimney top or cowl, the combination, with the smoke-stack and the surrounding casing E, separated from said smoke-stack by an annular space,of the external casing, D, having an upturned flange at its lower edge embracing the lower edge of the casing E, and forming a trough for the reception of water, the base of said trough being perforated and the flange portion being below the mouth of the stack, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 19th day of February, 1885. 

